22112018 has 8 divisors (see below), whose sum is σ = 33273612. Its totient is φ = 11020816.

The previous prime is 22112017. The next prime is 22112033. The reversal of 22112018 is 81021122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21743569 + 368449 = 4663^2 + 607^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 22111987 and 22112005.

It is not an unprimeable number, because it can be changed into a prime (22112017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16805 + ... + 18072.

Almost surely, 2^22112018 is an apocalyptic number.

22112018 is a deficient number, since it is larger than the sum of its proper divisors (11161594).

22112018 is a wasteful number, since it uses less digits than its factorization.

22112018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35196.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 22112018 is about 4702.3417570398. The cubic root of 22112018 is about 280.6787021793.

The spelling of 22112018 in words is "twenty-two million, one hundred twelve thousand, eighteen".